"docker-compose up" doesn't work - need to follow second path

`$ docker-compose up` doesn't work:

```
josiah@fineract-1:~/fintecheando-mifos-docker-ubuntu$ docker-compose up
ERROR:
        Can't find a suitable configuration file in this directory or any
        parent. Are you in the right directory?

        Supported filenames: docker-compose.yml, docker-compose.yaml
```
Perhaps README needs updating ? Minor issue but worth pointing out.